hi chaps just after a bit of info on lime lite renovating plaster, i have a tanking job coming up which i would like to use this on as its an external wall which cannot be injected...... i take it i have to scud the tanking before rendering ! could i build out the thickness in one coat (two passes) compared to sand and cement as the last time i used sand and cement on tanking it slid all over the place and had to keep the scratch coat very thin and if i need to do 2 separate coats do i need to scud the scratch like you do when using sbr ? thanks in advance for any help...